Reply to "ignition timing curve"

rapierMember

George,
A well timed lecture as this is on my mind too as I'm planning some rolling road time (I finally found a rolling road guy that's heard of a 'Cleveland'!).
I'm hoping to improve the gas mileage (currently 10 miles per US gallon) by improving the timing and carb set up.

I have, I think, a stock 351-CJ. It has a Mallory Dual Point set to 10 degrees advance.

Sounds like some more advance would improve things but what about the maximum advance? At the moment I think I have 26 (may be 28) to give 36 (or 38) total advance.

Any idea of a reasonable setting for static and maximum advance?

Also I have the choice of 94 or 91 octane (US PON) fuel here - is it reasonable to expect to run on the 91 octane with this engine?

BTW - Your method for setting the timing is the same one described in the official factory workshop manual for the Hillman Hunter/Sunbeam Arrow/Rapier cars.

2/1/065:58 AM

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